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Proceedings Paper

Prismatic bioinspired compound lenses for solar cells
Author(s): Francesco Chiadini; Vincenzo Fiumara; Antonio Scaglione; Akhlesh Lakhtakia
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Paper Abstract

A silicon prismatic lens, whose shape is inspired by the apposition compound eyes of some dipterans, was investigated to improve the light-harvesting capability of silicon solar cells. The bioinspired compound lens (BCL) has a fractal construction procedure in which the cross-section of the lens is a frustum of a infinitely long circular cylinder at the zeroth-stage, and is decorated with sections of smaller cylinders at higher stages of construction. We found that the light-coupling efficiency of the best performing first-stage BCL cannot be enhanced by higher-order stages and is significantly superior to other kinds of textured surfaces. By coating the lens with a double layer anti-reflection coating further enhancement of efficiency can be obtained. Our strategy can also be adopted for solar cells not made of silicon.

Paper Details

Date Published: 23 March 2011
PDF: 5 pages
Proc. SPIE 7975, Bioinspiration, Biomimetics, and Bioreplication, 79750H (23 March 2011);
Show Author Affiliations
Francesco Chiadini, Univ. of Salerno (Italy)
Vincenzo Fiumara, Univ. of Basilicata (Italy)
Antonio Scaglione, Univ. of Salerno (Italy)
Akhlesh Lakhtakia, The Pennsylvania State Univ. (United States)

Published in SPIE Proceedings Vol. 7975:
Bioinspiration, Biomimetics, and Bioreplication
Raúl J. Martín-Palma; Akhlesh Lakhtakia, Editor(s)

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